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【单选题】
下列关于温度梯度描述正确的时（ ）。A.
（1）是向量，沿着温度升高的正，与Q热流方向相反
B.
（2）是向量，沿着温度降低的正，与Q热流方向相反
C.
（3）是向量，沿着温度升高的正，与Q热流方向相同
D.
（4）以上叙述都不对
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举一反三
【单选题】Passage Two The lion may be the most famous of all the predators of Africa, but one of the most fascinating is the wild dog. Wild dogs are fairly small, averaging seventy pounds, with round, fanlike e...
A.
Africa's Wild Dogs
B.
Killers of the Plains
C.
Predators of Africa
D.
The Greedy Lion
【简答题】PASSAGE TWO Whose opinion in the passage is most similar to Kim Oser's?
【单选题】From the passage, we can assume that______.
A.
most normal two-year-old children can read
B.
brain-damaged children can improve their disability
C.
brain-damaged children generally have high IQs
D.
children with only half a brain are more intelligent
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